2077462/1 27 P0E2D: Internal Control Module Hybrid/EV Battery Monitor Performance under diagnostic address 0001

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Technical Service Bulletin 2077462/1

Instructions for use

Please note:
This TSH article may be used only if the equipment
combinations, on-board control units and event memory
entries specified below apply to the vehicle.

Diagnostic trouble codes

Diagnostic address	Diagnostic trouble code	Storage state
0021 - Battery management 2	P0A1F00: Battery Energy Control Module "A" Performance	Intermittent
0021 - Battery management 2	P0A1F00: Battery Energy Control Module "A" Performance	static
0021 - Battery management 2	P060400: Internal Contr.Module Random Access Memory (RAM) Error	Intermittent
0021 - Battery management 2	P060400: Internal Contr.Module Random Access Memory (RAM) Error	static
0021 - Battery management 2	P062F00: Internal Control Module EEPROM Error	Intermittent
0021 - Battery management 2	P062F00: Internal Control Module EEPROM Error	static
0021 - Battery management 2	P060600: Control Module Processor	Intermittent
0021 - Battery management 2	P060600: Control Module Processor	static
0021 - Battery management 2	P061000: Control Module Vehicle Options Error	Intermittent
0021 - Battery management 2	P061000: Control Module Vehicle Options Error	static
0021 - Battery management 2	P151A00: Control module Incorrect coding	Intermittent
0021 - Battery management 2	P151A00: Control module Incorrect coding	static
0001 - Engine electronics	P0E2D00: Internal Control Module Hybrid/EV Battery Monitor Performance	Intermittent
0001 - Engine electronics	P0E2D00: Internal Control Module Hybrid/EV Battery Monitor Performance	static

Technical Service Bulletin	Transaction No.: 2077462/1
27 P0E2D: Internal Control Module Hybrid/EV Battery Monitor Performance under diagnostic address 0001	Release date: Apr 2, 2025

Condition

Customer statement:

•	Fault message in instrument cluster: “Electrical system fault: currently restricted. Journey can be continued” in combination with a yellow/red battery symbol or “Electric/electrical system: fault. Please contact workshop.” in combination with a yellow/red battery symbol (Figure 1).

Figure 1.Message in the instrument cluster.

Workshop findings:

The following event memory entry is logged under diagnostic address 0001:

•	P0E2D:Internal Control Module Hybrid/EV Battery Monitor Performance

Oneof the following event memory entries is logged under diagnostic address 0021:

•	P0A1F00:Battery Energy Control Module Malfunction.

•	P060400:Internal Contr. Module Random Access Memory (RAM) Error.

•	P062F00:Internal Control Module EEPROM Error.

•	P060600:Control module faulty.

•	P061000:Control Module Vehicle Options Error.

•	P151A00:Control Module Vehicle Options Error.

Technical Background

If the event memory entries listed under the workshop findings are logged in diagnostic address 0021, this indicates a hardware fault on the 48V battery.

Production Solution

Not applicable.

Service

Check with the diagnostic tester whether the following event memory entry is logged in diagnostic address 0001:

‒	P0E2D00:Internal Control Module Hybrid/EV Battery Monitor Performance

If the event memory entryP0E2D00is logged in diagnostic address 0001, check diagnostic address 0021 for the following event memory entries:

‒	P0A1F00:Battery Energy Control Module Malfunction

‒	P060400:Internal Contr. Module Random Access Memory (RAM) Error

‒	P062F00: Internal Control Module EEPROM Error

‒	P060600:Control module faulty

‒	P061000:Control Module Vehicle Options Error

‒	P151A00:Control Module Vehicle Options Error

3.	If one of the event memory entries is logged under diagnostic address 0021, work through the entry with Guided Fault Finding. Follow the instructions given in Guided Fault Finding.

Warranty

Claim Type:

•	If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only.

Service Number:

2708

Damage Code:

0040

Labor Operations:

GFF / Guided Functions

0150 0010

See SRT with associated operations

GFF / Guided Functions

0150 0060

See SRT with associated operations

Claim Comment:

As per TSB 2077462/1

All warranty claims submitted for payment must be in accordance with theAudi Warranty Policies and Procedures Manual. Claims are subject to review or audit by Audi Warranty.

Additional Information

All part and service references provided in this TSB (2077462) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

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